The Old Cathedral (Alter Dom) in Linz was built by Jesuits between 1669 and 1683 in Baroque style. From 1785 to 1909 it served as cathedral of the Diocese of Linz.
The church was erected near the former Jesuits' College at the south end of the Hauptplatz. The church was originally called the Church of Ignatius and was dedicated to Saint Ignatius of Loyola, who founded the Jesuit Order.
The Jesuit Order was dissolved in 1773 by Pope Clement XIII. The Diocese of Linz and St. Pölten von Passau was effectively founded in 1783 by a decree of the Emperor Joseph II (1741–90) without advance approval from Rome. The emperor appointed the bishop and designated the former Jesuit church as the cathedral. The diocese was officially established by a papal certificate of 28 January 1785. Bishop Gregorius Thomas Ziegler (1827–52) led an era during which the church was restored. In 1909 the function of cathedral was transferred from the Ignatius church to the new building. The Jesuits returned in 1909.
The exterior of the church is relatively plain, with two towers on either side of the main door, topped with onion domes. The interior is decorated in lavish Baroque style, with pink marble columns. There are three side chapels on either side of a wide main nave.
The church has an elaborately detailed wooden pulpit, and a high altar made by Giovanni Battista Barbarino and Giovanni Battista Colombo that incorporates many statues in marble. Antonio Bellucci (1654–1726) made the painting of Saint Aloysius that is located above the altar. The stalls in the presbytery were carved by local artists, and are decorated with the faces of monsters and dwarfs. The carved choir stalls from the 17th century were transferred from Garsten Abbey. The Baroque organ was built by Franz Xaver Krismann, with alterations requested by Bruckner. The organ has not been modified.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.